Update Fast Refresh doc (#15923)
Update Fast Refresh doc (#15923)

Co-authored-by: Luis Alvarez D <faea5242a00c52da62a0f00df168c199b7ab748d@vercel.com>
Co-authored-by: Tim Neutkens <c2906527566e870efadc59ea5d0cd9114389a5d9@me.com>
Co-authored-by: Joe Haddad <4e0ba6b7cd003e26bd2c43baef51e423886a04cd@gmail.com>
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